Insulator.



Patented Feb. 6, 1912.

P. RUTZKY.

INSULATOR. ArPLIoATIoN FILED PEB. 15, 1'910.

UNITED ySTATES PATENT oFFIcE.

Insomma,

I Specification of Letters Patent. Apneation meta February 15, 1910. serial No. 544,956.

Patented Feb. 6, 1912.

To 'all wiz-om t may concern l Be it known that I, PAUL RUTZKY, a subject of the German Emperor, and residing at jsulators for such lines.

According to my invention vboth the, bare wire and the leadcovered, leading-incable are led through ducts in the body of the insulator into a closed chamber under a cap screwed onto the body of the insulator and there connected electrically together, the bare wire being led directly from the out;

. side, and the leading-in cable from under a 20 etticoat to the chamber under the cap. wing to this improved arrangement the most sensitive part about the insulator, z'. e. the joint below the vbare wire and the insulated, lead-covered, leading-in cable, is

protected from all the influences of the weather and particularly from moisture. Consequently no Yshunt can arise, and the joint between the two conductors does not require to be made by soldering as hereto-Y fore, but may be made by ordinary connecting terminals or switch levers. The peculiar arrangement of the ducts for the 'com' ductors prevents the formation outside the Vcap of shunts between the bare wire on the one xhand and the insulator support and the cable on the other hand.

Two illustrative embodiments of -my invention are represented by way of example on the accompanying drawing, wherein Figure l is avertical section through a leadingdin insulator, and Fig. y2 is a top plan` view of the same after Ithe cap has been re- I moved; 3 'is a 'vertical section through a testing-insulator, and Fig. 4 is atop plan view of the 'same after the cap has been re-` movedf` V` l. j

Like reference characters designate like arts in all views. L'

Referringiirstly to Figs.y 1 and }2,-1fdesigi nates thebody off the: insulator,- 24 the cap screwed thereon, 3 the'barel line, and4 the insulated, lead-covered -l lea'dingeinl IQ cable.' ThefbodyA l ofthe insulator/has aknowir lnot a matter 'of connecting one bare line ving-.injcable enters from the interior of the from which channel water collected in 'the construction or groove 5 for receivingl the bare line, and-.I arrange the duct 6 for this line leading directly from this groove into the chamber under the cap. The duct 7 for the leading-in cable does not begin outside the insulator but within the petticoat thereof. I make the end face 8 of the' body of the insulator concave and provide at the foot of the'curvature an annular channel, so that any water which condenses under the cap can collect in this channel and llow away through the duct 6. In order to prevent contact being made between this water of condensation and the'leading-in cable, I provide duct 7 at its end under the cap with an elevated edge l0. Iprovide one or-more projections l1 on the top of the insulator; these serve for carrying connecting bolts l2 or the like. n

My invention is also particularly suitable for. testing-insulators. ,In this event it is with an insulated cable, but of connecting two sections of the same bare wire in such manner that the line can be readily interrupted at any time for testing purposes.

Referring to Figs. 3 and t, the body 1 of 80 the testing-insulator, has `not one, but two constrictions or grooves 5. .The end of one section of the line is wound in'each vof these constrictions aroundthe insulator and then led through the' ducts 6to below thelcap 2 where they are connected by a switch 13.,

I claim 1. A leadingin insulator having a detachv able cap for telegraph and telephone' lines, in which both ythe bare line-wire vand also chamber under the capv and are there electrically connected, the bare line-wire beingv Y brought in from the outside while the lead- 'petticoat chamber, the duct for the bare linewire opening into an annular channel at the edge ofthe convex head of the insulator,`

chamber can flow away through the duct for the bare line-wire, while the leadingin -cable surrounded so' closely by its duct that con- ."densed water icannot issue through thisv duct. .Q2-.An insulator, particularly for tele- 90, the leading-in cable are led through ducts in V `the body. of the insulator into uthe closed j @Ph and telephone lines, .Comprising 'in I combination, an insulator body having a channel, the latter duct having an elevated concave top face, a lateral external groove, edge at said channel. 10 and a petticoat, said face having ,a channel In testimony whereof, I aiX my signa- ,in the same; and a detachable cap forming ture in the presence of two witnesses.

a chamber inclosing said face; said body PAUL RUTZKY. having a duct leading directly from said Witnesses: groove to said channel and a second duct GERTRUD BoNA,

leading from under said petticoat to said ROBERT H. DUNLAP. 

